Fix: Use channel_invites collection name instead of invites.

Was conflicting with invite-only rauth registrations.

src/database/migrations/scripts.rs

@@ -152,9 +152,9 @@ pub async fn run_migrations(revision: i32) -> i32 {
             .expect("Failed to create server_bans collection.");
 
         get_db()
-            .create_collection("invites", None)
+            .create_collection("channel_invites", None)
             .await
-            .expect("Failed to create invites collection.");
+            .expect("Failed to create channel_invites collection.");
     }
 
     // Reminder to update LATEST_REVISION when adding new migrations.